<!DOCTYPE html>
<html lang="zh-CN">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>404 - 页面未找到</title>
    <style>
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        
        body {
            font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
            background-color: #f5f5f5;
            color: #333;
            display: flex;
            justify-content: center;
            align-items: center;
            min-height: 100vh;
            padding: 20px;
        }
        
        .container {
            text-align: center;
            background-color: white;
            padding: 60px 40px;
            border-radius: 10px;
            box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
            max-width: 500px;
            width: 100%;
        }
        
        h1 {
            font-size: 120px;
            color: #e74c3c;
            margin-bottom: 20px;
            font-weight: 700;
        }
        
        h2 {
            font-size: 28px;
            color: #333;
            margin-bottom: 15px;
        }
        
        p {
            font-size: 16px;
            color: #666;
            margin-bottom: 30px;
            line-height: 1.6;
        }
        
        .btn {
            display: inline-block;
            padding: 12px 30px;
            background-color: #3498db;
            color: white;
            text-decoration: none;
            border-radius: 5px;
            transition: background-color 0.3s ease;
            font-size: 16px;
        }
        
        .btn:hover {
            background-color: #2980b9;
        }
        
        .emoji {
            font-size: 60px;
            margin-bottom: 20px;
        }
    </style>
</head>
<body>
    <div class="container">
        <div class="emoji">😕</div>
        <h1>404</h1>
        <h2>抱歉，页面未找到</h2>
        <p>您访问的页面可能已被删除、更名或暂时不可用。</p>
        <a href="/" class="btn">返回首页</a>
    </div>
</body>
</html>